Jun Li

Title: Innovations of Jun Li in Piezoelectric Materials

Introduction

Jun Li is an accomplished inventor based in Madison, WI (US), known for his significant contributions to the field of piezoelectric materials. With a total of 4 patents, he has made remarkable advancements that blend materials science with innovative engineering techniques.

Latest Patents

One of his latest patents is focused on wafer-scale piezoelectric bio-organic thin films. This invention features a flexible piezoelectric thin film, which is manufactured using a polyvinyl alcohol (PVA)-glycine-PVA sandwich heterostructure. The manufacturing process involves evaporating the solvent from a glycine-PVA mixture solution, allowing the film to automatically assemble into the desired structure as it is salted out. The strong hydrogen bonding between the oxygen atoms in glycine and the hydroxyl groups on PVA chains plays a crucial role in the nucleation and growth of the piezoelectric γ-glycine, as well as the alignment of the domain orientation.

Another notable patent is for a 3D-printed ferroelectric metamaterial that exhibits giant piezoelectricity and biomimetic mechanical toughness. This invention provides an in-situ poled ferroelectric print with true 3D geometry, featuring an intercalated electrode design. Soft polymer matrices are selected for the ferroelectric layers, while rigid polymer matrices are chosen for the electrode layers, effectively mimicking nacre architecture. The use of lithium-doped potassium sodium niobite (Li—KNN) microparticles enhances the ferroelectric properties and creates strong interfacial bonding with the interfacing electrode layers. Additionally, polylactic acid (PLA) in the electrode layers facilitates robust interfacial bonding with the Li—KNN microparticles.

Career Highlights

Jun Li is currently associated with the Wisconsin Alumni Research Foundation, where he continues to push the boundaries of innovation in materials science. His work has garnered attention for its potential applications in various fields, including biomedical devices and energy harvesting technologies.

Collaborations

Throughout his career, Jun Li has collaborated with notable colleagues such as Xudong Wang and Fan Yang, contributing to a dynamic research environment that fosters innovation and creativity.

Conclusion

Jun Li's innovative work in piezoelectric materials exemplifies the intersection of science and engineering. His patents reflect a commitment to